Big Bertha's cutter head lowered into launch pit

May 31, 2013 |By JOSHUA TRUJILLO

The cutter head for Big Bertha, WSDOT's massive tunnel boring machine, is lowered into the launch pit for the massive machine. The machine is schedule to launch in July.

JOSHUA TRUJILLO/SEATTLEPI.COM

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Washington State Department of Transportation's Big Bertha Highway 99 tunnel boring machine is shown in its launch pit on Friday, May 31, 2013. The machine is scheduled to be launched in July and will emerge from the other end of the tunnel 14 months later.

JOSHUA TRUJILLO/SEATTLEPI.COM

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Washington State Department of Transportation's Big Bertha Highway 99 tunnel boring machine is shown in its launch pit on Friday, May 31, 2013. The machine is scheduled to be launched in July and will emerge from the other end of the tunnel 14 months later.